John h



Feb. 6, 1923..

IGNTIGN BURNER PL UG Patented Fiel. 6, i923.

a ii.

alitill JOHN H. HUNT, F DAYTON, OHIO, ASSIGNOR T0 THE DAYTON ENGINEERINGLABORATORIES COMFANY, OF DAYTON, OHIO, A CORPORATIQN F GEIQ.

IGNITION SYSTEM.

ppilication led April 2,

To alt 'whom ft may concern.'

Be it known that l, JoHN H, HUNT, a citizen ot' the United States ofAmerica, residing at Dayton, county of Montgomery,

State of Ohio, have invented certain new .and useful Improvements inIgnition Systems` of which the following is a full, clear. and exactdescription.

This invention relates to ignition appanatus for internal comhustionengines equipped with electrically ignited t'uel burners Jr'or heatingthe explosive charge before` delivery to the tengine cylinders.

@ne ohject ot the invention is to provide a novel distributing deviceeffecting the alternate distribution in recurrent' Sequence of sparking:impulses produced alternately in a plurality of ignition coils, sothateach 'impulse will be discharged across an engine spark plug and theburner spark plug connected in series.

Other and Jfurther objects and advantages oi' the present invention willhe apparent from the following description, reference being had to theaccompanying drawing, wherein a 'preferred embodiment oi 'the presentinvention is clearly shown.

The figure of the drawing is a wiring diagram showing a preferred. formof the inventionI In the drawing, the liywheel ot an engine isrepresented hy the dot and dash ein. cle 20, A permanent magnet 2l issupported hy said flywheel and carries at itsends poles 22, 22% arrangedto he rotated in close proximity to the poles 24, 25 of armature cores26, which are diametrically opposite. Each core 26 supports a primary'winding 27 and secondary winding 28.`

40 Each primary winding 27 may` he shorted hy a pair of. contacts 29controlled by a lever 30 and a cam 3l having a lobe 32.

The cam 81 rotated by the engine at engine speed and the lobe 32 istimed with relation to th'e magnet 2l to open the primary circuit whenthe current therein is at the maximum whereby to induce a sparkingimpulse suffi-cient for engine ivnition in the corresponding secondary'`win( ing.

In the embodiment shown, provision is lmade for the burner ignition andfor the ignition of a four stroke cycle four cylinder engine, therebeing two coils or stationary armatures, and the magnet 2l being rotatedat engine speed, It is apparent that two 1921. SerialNo. 457891.

ignition impulses wiil be generated 'tor each ily-wheel revolution andlonr impulses for each engine cycle. A

ln order to providtA Y tor burner ignition without additional apparatusthan tnat required for engine ignition, a novel distributing device isprovided. The distributor head represented by thedot and dash cle 4()includes a circular row ot' stationary contacts 4l, 42. 425, 44. 45, 4o.4T., and 1li-l, and a stationary center contact 'ilte nate contacts 42,44, 4G, 4e. (engine plngc tacts) are connected with engine plugs 52, 54.5S respectively. in the usual'seduencc ot firing a 'four cyiinder engine, plug 54 would lire cylinder No. l. plug .58, cylinder No. 2%, plug5G, cylinder No., 4, and plug 52. cylinder No. 2. That is, oi' course,when the firing order is l-53- 4 2. These connections would he di'erentfor a different tiring order.

As regards the remaining distributor contacts 4l. 43, 45, 47, oppositeones as 4l, 4",

or 43. 47 may he termed an opposite pair;

and cach pail provides the terminals 'for one ot thc insulated secondarywindings 28, 28. It will he noted that the ends ol the upper winding 2Sare connected with contacts 4l. 45; and that the ends ot" the lowerwinding 2H ure connected with contacts 43, 47.

The rotor (Sl) carries a conductor el. 'for connecting the centercontact 4.2. connectel to burner plug 50, with contacts 4lmll, 45, 47 inrecurrent sequence. Kolor '3U carries a conductor o2 'I'or hridgingadjacent contacts such as 4l andr 42, as shown.

Assuming that an ignition impulse has just heen generated in the uppcrcoil 2S. this impulsewvill he distrihutcd to hnrncr plug 5() and to plugwhich is then connected to the coil 28 through contact l2. conductor andcontact -l-l. li' rotation is in the direction of arrow (S5. then al'tcrlilo magneto rotation and 900 rotation ot' rotor 30. an igni* tionimpulse will he generated in. the lower coil 28. This impulse will hedistributed to hui-ner plug 5f) through contact 47, ciinductor 6l andcontact 49. and also to engine ping 54 which is connected then to thelower coil 28 through contact 44. conductor n2 and corr tact 43.

In a similar manner plug tland plugs 56 and 58 will he supplied withignition.

It is therefore apparent that my novel iiirnting' ffii-wien prufiiiesfor burner ignitionin niii'litinn tu engine 1 'nitiun withuut :idili-vtinnnl ignition' um'uisit-ins rsurh que; miie, unil timers. Raich time:in ignitinii,impulse eeeurfi, thaseculidnry winding in nhirh the iinpulse is generuteii is izunneiteil in series with the lnirner )zii-kilus' unil an enaine smirk'.

A l plug, and i'listrihutinn is eileeteil to the ensequenee i liringAgine plugs in regular order.

While the 'forni of mechanism herein shnwn and deSrrih-sal institutes apreferred forni ef einhmliinent of the invent-ion, it is tn hemide-Stood that other forms might he ndopteii nii crimine' within a'yhe]sirene nf the claims which follow".

What l' claim is fulimvn:

i. ln nn ignition System fur engine incl burner ignition, theeinnbinntion with a num-v ber oi'- tignition coils equal t-:v half theninnher l@Pennine cylinders; of means for sueca-'ssiveiy producingspari-ring impulses in sziiil cells twice during 'each engine ryele;inni means ini' distributing the. sparking in.

pulse produced by each cnil 'tu one ni' lthe engine dings und to theburner plug'.

2" n an ignition Syntenz for engine und burner ignition, the combinationwith ai ninnber or" ignition coils eiieh hnvingn i 'imnry windingr and:il secondary winding, the nurnher of enilS being one-lm-ii' thevnulmiir-.r 'nt engine cylinders; of means fm' guceeseively producingthe. sparking im pulses in snirl unile; twice during eiieh engine cycle;:iinlfinennS im' aitervnzitey distributing from the coils the spankingimpuises produced therein, anni l Ineens inniniiing prQvisinns formnnerline' in aternute sequen the secondary windings of salici coilseach in series with the burner ping and with the engine 'phuijn 3, In anignition system Jfor engine unil Burner ignition, the combination with u'number of ignition coilseueh having afprimary Winding and anunndwywinding` the number nf enils being; une-half the nlnnher ni' engineeyiixu'lern; (it nien-ns for suce. siveiy producing Spurking impulses inwils twire linking meh engine rye'le; :i fiis trihutnr having; zicircular row nl Stntinnznfy contacts, alternate runt-arte; being enehrunnectedfwith sin engine plug", nnil nl the remainingcontnets, euchpair nf Opposite ones being' Connected with the sinne secondary Winding;and zrrntnr e'nx'rying nie-uns for connecting in reguinr Sequenre une0i" each pair of the secondary winding contacts with the burner plug,and carrying means for eeiniertinu1 in regular sequence the other ineuch pair 0f the Seeoniflnry .vinding contacts with :in engine plug"Contact.

i. In :in iirnitiun system for engine inni lun-ner ignition, theQonihinntion with a nuniner ui ignition. e` 'is' each having a prinuiryWinding' and a sefconiflnry Winding, the number 0i' coils being one-halfthe nurnher of engine cylinders; of means .for successively producingsparking impulses in said mils twice duringr euch enginecyele; adistributor heini having it center Contact connected with :i burneririlugj and a Circular, -mw of sta-- tionnry contacts, niterinitecontacts being each -cnnnectetl with :n1 engine ping, and nl theremaining contact-s, eau-,h pair 0i opposite 'ones beingconncetled withthe Sanne secondnry winding; :ind :i rotor carrying n conductor forennneet'ing in 'regular' sequence the Center cimtnet with une of eachpair 0f Secnnilziry Winfliin'g contacts, und carrying a conductinfur -ixi11ectiiig-g in regular sequence the other of nach pair of secondarywinding 'contacts with un inljaient engine plug contant. i

1n testimony whereof I hei-ctn my signutinc'e.

JOHN H. HUNT.

Y ifVitneSrses E. Soiminnnnnnn. I. A. (inni-immun.

